There are a lot of different types of professionals, with different types of needs. I would suspect that for the vast majority of the target demographic here,

There are a lot of different types of professionals, with different types of needs. I would suspect that for the vast majority of the target demographic here, upgradability just isn't that important. You can make ethical arguments about whether people ought to care, or whether the option should be available for the few people that do, but I just don't personally see a lot of people doing upgrades these days. For businesses, the cost of paying someone to upgrade a fleet of machines isn't there compared to just depreciating them over 3 years instead of 5 and replacing them more often. For a lot of independent professionals and home users it's just not worth the effort. The machine works until it doesn't and then they buy a new machine, and this one will get resold on craigslist or eBay, or get handed off as a substantial upgrade to some less technical family member.